Have you had a bike so dialed that it just fit you and your riding perfectly? I was just about there with me 05. Then, decided to sell and upgrade. I know I made a good choice, it will just take some time to get back to where I was with my 05. Making it more difficult, or more work is that my current bike started out as a 144 SX. I have to say that the suspension is going to require the least amount of work as it has FC susp front and rear. All I am having to do is replace springs and I believe it will be good. The biggest hurdle so far is the lack of bottom end. It rips from mid to top, it's just keeping it there which is the problem. Biggest issue is that it will bog going up a hill if I am not in the rpm's, like there isn't enough vacuum pressure. It just goes blaah. I was also able to lug along in 4th and launch the front end up and over obstacles with throttle and clutch. This bike just falls on it's face, and put me on the ground at least once. So, my goal is to achieve the stump pulling bottom end I had with my 05 in this anemic 08. I don't think it is any one thing causing the issue, rather several small things. Hopefully, along the way, you guys can help me figure this out. Thing is that my 05 was modded when I bought it, having been mildly ported and a light head cut (which I didn't know till I sent it off to Mike). First, let's look at the differences: 2005: mild porting of the jug milled head by Cycle Playground Gnarly pipe Boyeson reed block jetting dialed with 38mm carb reed block spacer (not much affect) 2k2 FW with 9 oz FWW 2008: stock porting stock head KTM Fatty pipe and silencer 39mm carb (part of the issue me thinks) SX ignition V Force reed block 46 rear vs 48 rear on the 05 ( I know gearing is different, but the middle gears are similar) 2k1 FW with 9 oz FWW (9oz lighter than the 05 setup) I am on a budget, so I am starting with the most economical changes first. Last night I did some mild porting of the jug, and cleaned up the exhaust flange. There are places on the flange that extend out into the port, causing a restriction. This should help. I will try to get some pics, though I don't have any before pics. I also V'd the divider between the ports from a U shape. I also went from a .75mm gasket to a .45mm gasket, which brought the squish down just below 1.5mm. I will have the head cut later, but my plan at this point is to test this set up, then stick a 48 tooth on the rear to get the gearing closer to what I had with my 05. Any other suggestions for the time being till I test?